Grab bucket



June 3, 1930. 1 w, CQE 1,751,778

I GRAB BUCKET Filed Jan. 24, 1927 INWNTOR DANIELWCOE f BY W AIIIORNIEYSPatented June 3, 1930 FEQE GRAB BUCKET Application filed January 24,1927. Serial No. 163,256.

This invention relates to improvements in grab-buckets and moreparticularly to a type of grab-bucket adapted for use in loading pulpwood from a wetbasin on to vessels or carriers. The principal object ofthe invention is to provide a device which will handle the pulp wood inbulk, that is in quantities of approximately a cord, more or less,instead of handling the logs by individual pieces.

According to my invention, I provide a grab-bucket of open-mouthed boxor caisson form, but adapted to be closed at the bottom by means ofhinged sides or doors. The structure is preferably of rectangular formand is 1 suspended from the top by the usual hoisting mechanism. Theends of the bucket are formed of plates, and the sides of spaced bars ortines, pivoted or hinged in such a manner that they may operate as doorsto close under .2 the load after it has been trapped within the bucket.The structure is adapted tobe lowered into a wet basin, with its sidesor jaws open, so that the end walls and pivoted 7 side mus of the bucketare substantially vertical. The weight of the structure is sufficient sothat the: comparatively thin end and side walls displace even aconcentrated body of wood'floating in a basin or reservoir, and trapwithin the body of the bucket, a

3, quantity of wood, which, when the jaws are closed under the waterbeneath the load, may

be lifted in bulk and transferred to any vessel which it is desired toload. 7

In the drawings, Figure 1 is a side elevati-on of the grab-bucket.

Figure 2 is a plan view of same. Figure 3 is an end view.

Figure 4 is a sectional plan taken on the line 44 Figure 1.

Referring more particularly to the draw ings, 11 designates agrab-bucket of rectangular box, form, having the ends 12, sides 13, andtop 14, preferably built of thin plates suitably connected together attheir adjacent edges. The lower edges are so constructed that they liein substantially the same horizontal plane when the bucket is in theopen position, so that when it is lowered into the basin, as shown inFigure 3, it will force its way by gravity, between the logs 15 with itssides and ends vertically disposed. The sides are built in two sections,the upper sections being secured to the top and ends, while the lowersections 16 are pivotally attached to pins 17 extending from end to endof the bucket. Each lower section may consist of a plurality of spacedbars 18, so connected that they move in unison. This construction formsa strong support for the logs, as the edges of the bars contact with theload. EX- tending upwardly from the top 14, is the frame 17 which mayalso be built of thin plates suitably secured and braced together toform a guard for the grab opening and closing. mechanism hereinafterdescribed. The frame is secured to the lower portion of the bucket.Extending from side to side of the frame and near the top thereof, isthe pin 18 and rotatably mounted thereon are the holding pulleys 19,around which the hoisting ropes 20 pass to a suitable hoisting unit. Theclosing rope 21 passes between the pulleys 19 and around a pulley 22,whioh is mounted on a pin 23. The closing of the bucket is controlled bythe upward movement of the pulley 22 towards the holding pulleys..Mounted one on each side of the pulley 22 and on the pin 23, are theside closing link operating pulleys 2d. Secured to eachmovable sectionof the sides and near the lower ends thereof, are the closing links 25,and each pair of links are ,pivotally connected together by means of thepins 26, each of which may be attached'to one end of the link operatingropes 27; Each of the ropes pass around pulleys 28 and one of thepulleys 24, and is secured to the framing of the bucket'as indicated at27; The pulleys 28 and 29 are rotatably secured by any suitable means tothe frame. Guards 30 and 31 may be placed around the pulleys to hold theropes thereon and suitable guide rods passing through lugs 32 in theguard 31 maybe provided to hold the pulley 22 in position. The guards 30and 31 are vertically movable with respect to the grab-bucket and serveas bearings for the pin 23 of pulley 22. All plates forming part of thebucket may be provided with perfora tions 33.

The closing mechanismfherein: detailed, is

only illustrative of one type of side closing mechanism which may beused, and many 7 modifications may be made therein. In the drawing, Ihave shown the grab-bucket with the two sides hinged, but it will bereadily Q of the bucket.

understood that one of the sides may be hinged and the otherstationary,so that when brought into contact they will form a bottom which isangularly disposed to the horizontal and to the vertically disposed sidesections In operation the bucket is opened, and then lowered into a wetbasin in which pulp wood logs have been stored, in concentrated form.The lower edges of the bucket being of thin plates, displace the logs inproximity thereto and trap the logs within thearea of the vbucket. Thebucket is lowered until the hinged portions of the sides are below thelowermost edges of the logs. The trapped logs areheld in suspension bythe water and the hingedportions of the sides are brought together withthe least resistance, to" form a closure or bottom for the bucket. Theclos ing of the bucket is accomplished by pulling the closing rope andbringing the closing pulley nearer to the holding pulleys. The movementof the closing pulley exerts a pull on the link operating ropes to pullthe links into the position shown in chain dotted line to arrangethemselves with their longitudinal in Figur 3. The bucket in itsclosed-posirangement being such that the bottom closures swing to andfrom'operative position as the sheave and pulleys are raised and loweredwith respect to the top wall of the bucket.

2. A hoisting bucket having top and side 70,

walls and a pair of bottom walls hingedly connected to the lower edgesof certain of said sidewalls, a casing rising from the top wall of thebucket and open at the top, a pin 'journalled in the top portion of saidcasing, pulleys carried by said pin, bucket hoisting ropes trainedaround said pulleys, a vertically movable sheave mounted in the casingand normally positioned below said pulleys, a

sheave lifting cable trained around said tica-lly with respect to thebucket and casing, and connectionsbetween said sheave and thebottoinclosures designed to effectswinging -Inovement of the latter toand from operative position as the sheave'is raised and lowered.

In witness whereof, I have he'reunto s'et my hand.v

tion is then pulled upwardly and the logs are brought into rollingcontact with the angularly disposed sections of the sides and tend axesparallel to the contacting edges of thesides of the bucket. 7

It will be seen that when the logs are released, or discharged, from thebucket, they are in a semi-arranged condition which facilitates thepiling of the logs by manual labour.

All parts of the bucket mechanism are prevented from coming in contactwith the logs and owing to the sloping sides of the frame, 1 no logs canbe carried on the outer surfaces of the bucket. The sloping sides of theframe I also facilitate the withdrawal of the bucket from the basin, byspreading the logs during the hoisting movement of the bucket.

Having thus described my invention, what I claim r 1. A hoisting buckethaving top and side walls and bottom closures hinged to certain of saidside walls, a sheave disposed above the top wall of the bucket and freeto move vertically with respect, thereto, a sheaf hoist 1 DANIEL w. con.

sheave and operable to'move the sheave ver-

